Seriously, how cute is Saint West? Kim Kardashian's son made a rare appearance on Snapchat — and he was captured singing Kylie Jenner a happy birthday. In what made be the cutest thing on the Internet today, the 20-month-old definitely steals the spotlight from his aunt at the party.

Rocking braids and a black tee shirt, Saint is held by his famous mom at the family gathering at mom Kris Jenner's house. His cousin Dream Kardashian is also featured in the video and as for who Kylie is carrying on her hip in the video, your guess is as good as ours. Watch the video below to see just how big Saint has gotten!

Noticeably absent from the video is big sister North West, 4, who we know loves blowing out birthday candles, even if they're not hers. Kylie's festivities just keep on coming after the KUWTK star who celebrated her 20th birthday with a surprise party the night before.

Wearing an oversized tee, the brunette beauty seemingly fueled rumors she is four months pregnant at the party, as she walked in and gave her new boyfriend, rapper Travis Scott, a big hug. "Kylie kept to herself with the excuse that she was focused on her new makeup line,” sources told the mag. “But we all think she’s staying out of the spotlight until she’s ready to share her news. She’s been keeping low-key for months now, and everyone thinks she’s pregnant.”

Meanwhile, Kim, 36, is focused on expanding her family via surrogate, meaning North and Saint will soon have another sibling or two. It is being reported that Kim is expecting twins. “She wants to choose someone outside of the state of California, where there are all kinds of surrogacy laws,” the insider told Life & Style at the time. “She’s ready to go.”